#include<iostream>
using namespace std;
const int N = 100010;
int arr[N];
int n, m;
int main()
{
	cin >> n >> m;
	for (int i = 0; i < n; i++) {
		cin >> arr[i];
	}
	while (m--) {
		int x;
		cin >> x;
		int l = 0;
		int r = n - 1;
		while (l < r) {
			int mid = (l + r) >> 1;
			if (arr[mid] >= x) {
				r=mid;
			}
			else {
				r = mid;	
			}
		}
		if (arr[l] != x) {
			cout << "-1 -1" << endl;
		}
		else {
			cout << l << " ";
			int l = 0;
			int r = n - 1;
			while (l < r) {
				int mid = ( l +r + 1) >> 1;
				if (arr[mid] >= x)
				{
					r = mid - 1;
				}
				else {
					l = mid;
				}
			}
			cout << l << " ";
		}
	}
	return 0;
}